摘要:
The invention relates to a stretched molded article comprising a polymer A and a compound B, wherein the polymer A is a polyamide or a polyolefin and is at least partially oriented and comprises a crystalline phase and a non-crystalline phase, wherein the mass of compound B is from 0.25 to 10 mass% relative to the mass of polymer A, and wherein the compound B has a refractive index (n B ) higher than the isotropic refractive index of polymer A (n A ). The invention further relates to a process for manufacturing such stretch molded article, the use of such stretch molded articles and a product comprising such stretch molded article.
摘要翻译:本发明涉及包含聚合物A和化合物B的拉伸模制品,其中聚合物A是聚酰胺或聚烯烃并且至少部分地取向并且包含结晶相和非结晶相, 其中相对于聚合物A的质量,化合物B的质量为0.25至10质量%,并且其中化合物B的折射率(n B B)高于各向同性折射率 的聚合物A(n A)。 本发明还涉及制造这种拉伸模塑制品的方法,这种拉伸模塑制品的用途以及包含这种拉伸模塑制品的产品。 p>
摘要:
The present invention is a method for selectively machine directionally stretching a predetermined section of a pre-combined web material of varying material width by running the web over stretching rolls operated at a speed differential.
摘要:
Methods include at least one sequential stretching step between circular or spiralized grooved rollers and the sequential stretching is performed according to at least one of six aspects of the invention.
摘要:
A method for preparing a pre-stretched film includes extruding a multi-layered film that has an initial overall film thickness of 24 µm to 35 µm and stretching the multi-layered film from the initial film thickness to a final film thickness of less than 12 µm to form a pre-stretched film. The multi-layered film has a first layer that includes an ultra low density polyethylene having a density less than 0.910 g/cm 3 and has second and third layers that each independently includes a linear low density polyethylene having a density of 0.910 g/cm 3 to 0.94 g/cm 3 . The pre-stretched film is capable of exhibiting an ultimate stretch of less than 28% at an applied weight of 45 kg and less based on a percent change in thickness of the pre-stretched film prior to application of the applied weight compared to after application of the applied weight.
摘要翻译:制备预拉伸膜的方法包括挤出初始总膜厚为24μm至35μm并将多层膜从初始膜厚拉伸至最终膜厚小于12的多层膜 以形成预拉伸膜。 多层膜具有第一层,其包括密度小于0.910g / cm 3的超低密度聚乙烯,并且具有第二和第三层,其各自独立地包括密度为0.910g / cm 3至0.94的线性低密度聚乙烯 克/立方厘米。 预拉伸膜的施加重量为45kg以下时的伸长率小于28%,基于施用重量之前预拉伸膜的厚度百分比变化相比施加后的涂布量 的应用重量。
摘要:
A method of drawing different materials includes forming a first material into a preform body defining at least one channel extending therethrough having a first cross- sectional area. A first element formed of a second material is inserted into the channel and with the preform body creates a preform assembly. The first element has a cross-sectional area that is less than the cross-sectional area of the channel, and the second material has a higher melting temperature than the first material. The preform assembly is heated so that the first material softens and the preform assembly is drawn so that the preform body deforms at a first deformation rate to a smaller cross-sectional area and the first element substantially maintains a constant cross-sectional area throughout the drawing process. Upon completion of the drawing step, the cross-sectional area of the channel is equivalent to the cross-sectional area of the first element.